Add systemd service.

[MitsuhaMiyamizu]

[Unit]
Description=YuukoResume
Documentation=https://github.com/PomeloFoundation/YuukoResume

Wants=network.target
After=network.target

[Service]
User= example

Nice=5
KillMode=control-group
SuccessExitStatus=0 1
NoNewPrivileges=true
PrivateTmp=true
InaccessibleDirectories=/sys /srv -/opt /media -/lost+found
ReadWriteDirectories=/home/example/YuukoResume/src/YuukoResume
WorkingDirectory=/home/example/YuukoResume/src/YuukoResume
ExecStart=/usr/bin/dotnet run

[Install]
WantedBy=multi-user.target